WP
<link rel="stylesheet" href="<?php bloginfo('stylesheet_url'); ?>">
Ar Asru
<link rel="stylesheet" href="<?php bloginfo('stylesheet_url'); ?>">add_action( 'wp_enqueue_scripts', 'theme_name_scripts' );
function theme_name_scripts() {
wp_enqueue_style( 'style-name', get_stylesheet_uri() . "/css/bootstrap.css" );
wp_enqueue_style( 'style-name', get_stylesheet_uri() . "/css/bootstrap-responsive.css" );
}